Combining Philosophers

All the ideas for Hilbert,D/Ackermann,W, Anaximenes and Sara L. Uckelman

expand these ideas     |    start again     |     specify just one area for these philosophers

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3 ideas

4. Formal Logic / C. Predicate Calculus PC / 1. Predicate Calculus PC

17750

The first clear proof of the consistency of the first order predicate logic was in 1928 [Hilbert/Ackermann, by Walicki]

4. Formal Logic / E. Nonclassical Logics / 11. Dynamic Logics

15381

Dyamic logics model changes between classical states, in action, belief, and computing [Uckelman]

26. Natural Theory / A. Speculations on Nature / 6. Early Matter Theories / c. Ultimate substances

1497	For Anaximenes nature is air, which takes different forms by rarefaction and condensation [Anaximenes, by Simplicius]